Top-up Tax declaration

The cantons are responsible for assessing the Top-up Tax.

Top-up Tax declaration
Registering and deregistering
Technical support

Top-up Tax declaration

As a company obliged to pay tax, you are required to submit a top-up tax return electronically via the federal government’s ePortal. If you have any questions regarding registration, deregistration and declaration of the Top-up Tax, please contact the tax administration of the relevant canton.

Top-up Tax
Top-up Tax declaration

Registering and deregistering

Register your company for the Top-up Tax online on the federal e-Portal, where you can also deregister yourself. If you have any questions about registering and deregistering, please contact the tax administration of the relevant canton.